- To extend ( reset/rearm) the evaluation period to another 30 days, click on Start > All Programs > Accessories > right click on Command Prompt and click on Run as administrator
If you have the User Access Control feature set as default, then a pop up box will appear and you will have to click on Yes to confirm the action
- Type or paste the following command:slmgr -rearm
- A confirmation message will be displayed, stating that the command completed successfully, and that you will need to restart the machine in order for the changes to take effect. So reboot your machine.
- After your system reboots, confirm the changes, by going again into the properties of Computer ( right click on Computer icon > Click onProperties ), under the Windows Activation section you will notice that the counter has been reset to 30 days.
Repeat these steps whenever the 30 days are almost completed, that is when there is 1 or 2 days remaining, run the slmgr -rearm command so that you gain another 30 days. Do not run the command if you have enough remaining days, that is if you have for example 20 remaining days and ran the command, you will lose the 20 days and the counter will be reset to 30 days. so the best thing to do to gain the 120 days is to run the command at the very last day of the evaluation period.